hush puppies shoes — misleading discount advertisement

Address:

Phoenix Mall, Lower Parel Mumbai, 400027

Bought a pair of shoes from Hush Puppies shop at High Street Phoenix Mall. Lower Parel Mumbai.

It was boldly advertised that 50% discount was being offered whilst making payment i asked for the discount wherein is was shown two racks of shoes on which only discount was offered and that too 30% . Nowhere on the Advertisement it was mentioned that " Only on selected items" or " Upto 50% discount.
MY invoice No CM[protected]